Reason for existence (Scientology)

"Well, apparently, apparently, the reason we're alive is to help. I know that's one of those silly answers. But that's what life is.

Fellow says, "What is the reason for life?" Oddly enough, the apparent answer to the thing, if he wants a very finite, basic reason, is to help people. That's apparently a fundamental reason for existence."

L. Ron Hubbard


Randy, I'm not sure I understand how one follows from the other.  Can you expand on that a little?